ELECTRICAL Infiniti - Q45 - 2005

Infiniti Q45 2005 - IDENTIFICATION

WARNING:

Vehicle is equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see PRECAUTIONS in SUPPLEMENTAL RESTRAINT SYSTEM article in RESTRAINTS.

WARNING:

Always disconnect battery ground cable before servicing high-current fuses. It is recommended that high-current fuses be replaced by a qualified technician.

CAUTION:

When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle.

Infiniti Q45 2005 - ENGINE COMPARTMENT

NOTE:

For circuit wiring diagram, see POWER SUPPLY ROUTING in the POWER SUPPLY, GROUND & CIRCUIT ELEMENTS article in ELECTRICAL.

Fig. 1: Infiniti Q45 2005 - Component Locations - Electrical Units Location In Engine Compartment

Fig. 2: Infiniti Q45 2005 - Component Locations - Identifying Fuse, Fusible Link & Relay Block (J/B) Components

Infiniti Q45 2005 Fuse, Fusible Link & Relay Block (J/B) Assignments

Fusible Link/Fuse	Amps	Circuit
Fusible Link B	50 A	Ignition Relay
Fuse 51	10 A	A/C Relay
Fuse 52	15 A	Sound & Navigation Systems
Fuse 53	20 A	In Fuse Block - Junction Box (J/B) No. 2: ECM Relay
Fuse 54	15 A	Tail Lamp Relay
Fuse 55	20 A	Headlamp Relay 1
Fuse 56	15 A	Horn Relay & Starting/Charging System
Fuse 57	20 A	Headlamp Relay 1
Fuse 58	10 A	Cooling Fans, Engine Controls, Computer Data Lines Systems

Fig. 3: Infiniti Q45 2005 - Component Locations - Identifying Fuse, Fusible Link & Relay Box Components

Infiniti Q45 2005 Fuse, Fusible Link & Relay Box Assignments

Fusible Link/Fuse	Amps	Circuit
Fusible Link C	50 A	In Fuse Block - Junction Box (J/B) No. 1: Accessory Relay & Fuses 3, 6, 8, 10, 11, 15, 17, 19, 22
Fusible Link D	30 A	Warning System
Fusible Link E	40 A	Cooling Fans System
Fusible Link F	30 A	ABS
Fusible Link G	50 A	Ignition Switch
Fusible Link H	40 A	In Fuse Block - Junction Box (J/B) No. 1: Circuit Breakers 1 & 2
Fusible Link I	40 A	Cooling Fans System
Fusible Link J	30 A	Sound Systems
Fusible Link K	50 A	ABS
Fusible Link L	50 A	In Fuse Block - Junction Box (J/B) No. 2: Blower Relay & Fuse 32
Fuse 71	15 A	Seats System
Fuse 72	15 A	Seats System
Fuse 73	15 A	Headlamp Relay 2
Fuse 74	15 A	Throttle Control Motor Relay
Fuse 75	10 A	Transmissions System
Fuse 76	-	Blank
Fuse 77	10 A	Cruise Control System
Fuse 78	15 A	Headlights System
Fuse 81	20 A	Seats System
Fuse 82	10 A	Headlights System

Infiniti Q45 2005 - PASSENGER COMPARTMENT

NOTE:

For circuit wiring diagram, see POWER SUPPLY ROUTING in the POWER SUPPLY, GROUND & CIRCUIT ELEMENTS article in ELECTRICAL.

Fig. 4: Infiniti Q45 2005 - Component Locations - Identifying Electrical Units Location In Passenger Compartment (1 Of 2)

Fig. 5: Infiniti Q45 2005 - Component Locations - Identifying Electrical Units Location In Passenger Compartment (2 Of 2)

Fig. 6: Infiniti Q45 2005 - Component Locations - Identifying Fuse Block - Junction Box (J/B) No. 1

Infiniti Q45 2005 Fuse Block - Junction Box (J/B) No. 1 Assignments

Fuse/Circuit Breaker	Amps	Circuit
1	15 A	Warning, Navigation, Instrument Cluster, Cruise Control, Power Tops, Door Locks, Anti-Theft, Defogger, Power Windows, Seats, Headlights, Exterior Lights, Interior Lights, Memory, Wiper/Washer, Computer Data Lines, Electronic Mufflers, Mirrors Systems
2	15 A	A/C System
3	15 A	Trunk Lid Opener Relay, Trunk, Tailgate, Power Tops, Door Locks, Anti-Theft, Defogger, Power Windows, Interior Lights, Mirrors, Memory, Headlights, Warning, Wiper/Washer, Computer Data Lines Systems
4	15 A	A/C, Defogger, Power Windows, Interior Lights, Sound, Phone Handset Systems
5	10 A	Exterior Lights System
6	10 A	Engine Controls, Transmissions, Electronic Suspension, ABS, Anti-Theft, Interior Lights, A/C, Instrument Cluster, Warning, Navigation, Headlights, Phone Handset Systems
7	15 A	Electronic Suspension, ABS Systems
8	15 A	Interior Lights Systems
9	10 A	Engine Controls, Transmissions, Instrument Cluster, Electronic Suspension, Warning, Memory, Mirrors, Supplemental Restraints, Starting/Charging, Exterior Lights, Interior Lights, Wiper/Washer, Navigation, Headlights, Cruise Control Systems
10	15 A	Defogger System
11	15 A	Defogger System
12	10 A	Shift Interlock, Engine Controls Systems
13	10 A	Fuel Pump Relay & Engine Controls System
14	10 A	Memory, Computer Data Lines, Headlights Systems
15	10 A	Trunk, Tailgate, Fuel Doors, Door Locks Systems
16	10 A	Engine Controls System
17	20 A	Engine Controls, Shift Interlock, Electronic Suspension, Exterior Lights, Transmissions, Cruise Control, ABS Systems
18	15 A	Engine Controls System
19	10 A	Shift Interlock System
20	10 A	Supplemental Restraints System
21	10 A	Warning, Memory, A/C, Headlights, Interior Lights, Instrument Cluster, Computer Data Lines, Sound, Navigation, Anti-Theft Systems
22	15 A	Exterior Lights System
CB 1	-	Power Tops, Door Locks, Anti-Theft, Power Windows, Interior Lights, Computer Data Lines, Memory Systems
CB 2	-	Door Locks, Anti-Theft, Power Windows, Computer Data Lines, Interior Lights, Seats Systems
CB 3	-	Front Cigarette Lighter, Front Power Socket

Fig. 7: Infiniti Q45 2005 - Component Locations - Identifying Fuse Block - Junction Box (J/B) No. 2

Infiniti Q45 2005 Fuse Block - Junction Box (J/B) No. 2 Fuse Assignments

Fuse	Amps	Circuit
31	15 A	A/C System
32	10 A	Engine Controls, Memory, Door Locks, Shift Interlock, Interior Lights, Power Windows, Warning, Anti-Theft Systems
33	15 A	A/C System
34	20 A	Cruise Control, Wiper/Washer Systems
35	10 A	Transmissions System
36	15 A	Fuel Pump Relay
37	10 A	Phone Handset
38	-	Blank